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130697287 = 72921492
BaseRepresentation
bin1111100101001…
…00100001000111
3100002221002222021
413302210201013
5231424303122
620545144011
73144623440
oct762444107
9302832867
10130697287
1167858896
123792b007
1321100c96
14135022c7
15b71a1c7
hex7ca4847

130697287 has 18 divisors (see below), whose sum is σ = 155741768. Its totient is φ = 107437344.

The previous prime is 130697267. The next prime is 130697291. The reversal of 130697287 is 782796031.

It is a happy number.

It is not a de Polignac number, because 130697287 - 215 = 130664519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130697227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 877089 + ... + 877237.

Almost surely, 2130697287 is an apocalyptic number.

130697287 is a deficient number, since it is larger than the sum of its proper divisors (25044481).

130697287 is an frugal number, since it uses more digits than its factorization.

130697287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 130697287 is about 11432.2914151101. The cubic root of 130697287 is about 507.4838090073.

The spelling of 130697287 in words is "one hundred thirty million, six hundred ninety-seven thousand, two hundred eighty-seven".

Divisors: 1 7 29 149 203 841 1043 4321 5887 22201 30247 125309 155407 643829 877163 4506803 18671041 130697287